WO2022179015A1 - Method and system for interconnected operation control of true and pseudo bipolar direct current conversion device - Google Patents

Method and system for interconnected operation control of true and pseudo bipolar direct current conversion device Download PDF

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WO2022179015A1
WO2022179015A1 PCT/CN2021/102567 CN2021102567W WO2022179015A1 WO 2022179015 A1 WO2022179015 A1 WO 2022179015A1 CN 2021102567 W CN2021102567 W CN 2021102567W WO 2022179015 A1 WO2022179015 A1 WO 2022179015A1
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bus
voltage
conversion equipment
positive
pseudo
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PCT/CN2021/102567
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French (fr)
Chinese (zh)
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姜云龙
刘瑞煌
张宸宇
葛雪峰
史明明
杨景刚
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国网江苏省电力有限公司电力科学研究院
国网江苏省电力有限公司
江苏省电力试验研究院有限公司
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08—Three-wire systems; Systems having more than three wires
    • H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the invention relates to an interconnected operation control method and system of true and pseudo bipolar direct current conversion equipment, belonging to the field of electric power.
  • Patent CN110460034A discloses a DC power distribution system and its test method, which can realize the comparison of the true and false bipolar characteristics of the DC system and the performance analysis of the key equipment of the DC distribution network, but cannot realize the true and false bipolar DC conversion equipment. interconnected operation.
  • the present invention provides an interconnected operation control method and system for true and pseudo bipolar DC conversion equipment, and solves the problems disclosed in the background art.
  • the technical scheme adopted in the present invention is:
  • An interconnected operation control method for true and pseudo bipolar DC conversion equipment comprising,
  • the grounding equipment that controls the DC system is connected to the zero-pole bus; wherein, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
  • Control the positive DC conversion equipment and negative DC conversion equipment of the DC system to start in a constant voltage mode respectively clamp the voltage between the positive DC bus and the zero-pole bus, and the voltage between the negative DC bus and the zero-pole bus, and make the voltage between the buses. meet preset requirements.
  • the pseudo-bipolar DC conversion device is controlled to be started in a constant power mode, so that the output power of the positive electrode DC conversion device and the negative electrode DC conversion device varies with the output power of the pseudo-bipolar DC conversion device.
  • the positive DC conversion equipment and pseudo-bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, respectively clamping the voltage between the positive DC bus and the zero-pole bus, and the voltage between the positive DC bus and the negative DC bus, and make the voltage between the busbars.
  • the voltage meets the preset requirements.
  • the negative DC conversion equipment and pseudo-bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, respectively clamping the voltage between the zero-pole DC bus and the negative bus, the voltage between the positive DC bus and the negative DC bus, and making the voltage between the bus bars The voltage meets the preset requirements.
  • the positive DC conversion device is controlled to start in a constant power mode, so that the output power of the negative DC conversion device and the pseudo-bipolar DC conversion device varies with the output power of the positive DC conversion device.
  • U A0 is the voltage between the positive DC bus and the zero-pole bus
  • U 0B is the voltage between the zero-pole DC bus and the negative bus
  • U AB is the voltage between the positive DC bus and the negative DC bus.
  • An interconnected operation control system for true and pseudo bipolar DC conversion equipment comprising,
  • Grounding control module control the grounding equipment of the DC system to connect with the zero-pole bus; among them, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
  • Constant voltage startup control module control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars The voltage meets the preset requirements;
  • Constant power startup control module control the remaining one device to start in constant power mode, so that the output power of the constant voltage startup device changes with the output power of the constant power startup device.
  • a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform the operation of a true and pseudo bipolar DC conversion device. Interconnected operation control method.
  • the present invention controls any two devices in the positive DC conversion device, the negative DC conversion device and the pseudo-bipolar DC conversion device to start in a constant voltage mode, and clamps the corresponding voltage between the bus bars, so as to set the two poles.
  • the busbar voltage controls the remaining one equipment to start in a constant power mode, controls the output power, makes the DC system run normally, and realizes the interconnected operation of the true and pseudo bipolar DC conversion equipment.
  • Fig. 1 is the flow chart of the method of the present invention
  • FIG. 2 is a schematic diagram of the DC system interconnecting the DC system with true and pseudo bipolar DC conversion equipment.
  • a method for controlling the interconnected operation of true and pseudo bipolar DC conversion equipment includes the following steps:
  • Step 1 control the grounding equipment of the DC system to connect with the zero-pole bus; wherein, the DC system is a DC system in which true and pseudo bipolar DC conversion devices are interconnected.
  • the DC system is shown in Figure 2, including positive DC bus, zero-pole bus, negative DC bus, true bipolar DC conversion equipment, pseudo-bipolar DC conversion equipment, grounding equipment, and outlet switches of each device.
  • true bipolar DC conversion The equipment includes a negative DC conversion device and a positive DC conversion device.
  • the negative DC conversion device is connected across the zero pole bus and the negative DC bus through the outlet switch
  • the positive DC conversion device is connected across the positive DC bus and the zero pole bus through the outlet switch
  • the pseudo bipolar DC conversion device is connected across the positive DC bus and the negative electrode through the outlet switch DC bus
  • grounding equipment is connected to the zero-pole bus through the outgoing switch.
  • the voltage between the positive DC bus and the zero-pole DC bus is U A0
  • the voltage between the zero-pole DC bus and the negative DC bus is U 0B
  • the voltage between the positive DC bus and the negative DC bus is U AB
  • the negative DC conversion equipment flows to zero
  • the current of the pole bus is I 10
  • the current flowing from the negative DC bus is I 1B
  • the current flowing from the positive DC conversion device to the positive DC bus is I 2A
  • the current flowing from the zero-pole bus is I 20
  • the pseudo-bipolar DC conversion device The current flowing from the positive DC bus is I 3A
  • the current flowing to the negative DC bus is I 3B .
  • the grounding equipment of the control DC system is connected to the zero-pole bus, that is, the outlet switch between the grounding equipment and the zero-pole bus is controlled to work, so that the grounding device is connected to the zero-pole bus, so that the zero-pole bus is grounded.
  • Step 2 Control any two devices in the positive DC conversion device, the negative DC conversion device, and the pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars meet. Default requirements.
  • the first type control the positive DC conversion equipment and negative DC conversion equipment of the DC system to start with constant voltage, respectively clamp the voltage between the positive DC bus and the zero-pole bus, and the voltage between the negative DC bus and the zero-pole bus, and make The voltage between the busbars meets the preset requirements.
  • the third type control the negative DC conversion equipment and pseudo-bipolar DC conversion equipment of the DC system to start in a constant voltage mode, respectively clamping the voltage between the zero-pole DC bus and the negative bus, and the voltage between the positive DC bus and the negative DC bus. And make the voltage between the busbars meet the preset requirements.
  • the specific process is as follows: control the positive DC conversion device to start in a constant voltage mode, control the outlet voltage of the positive DC conversion device, and control the outlet switch connected to the positive DC conversion device to work, so that the positive DC conversion device works The voltage between the busbar and the zero-pole busbar is clamped.
  • the constant voltage mode startup of the negative DC conversion device and the pseudo-bipolar DC conversion device is similar.
  • the default requirements are:
  • U A0 is the voltage between the positive DC bus and the zero-pole bus
  • U 0B is the voltage between the zero-pole DC bus and the negative bus
  • U AB is the voltage between the positive DC bus and the negative DC bus.
  • Step 3 control the remaining one device to start in a constant power mode, so that the output power of the constant voltage mode startup device changes with the output power of the constant power mode startup device.
  • the pseudo-bipolar DC conversion device is controlled to start in a constant power mode, so that the output power of the positive DC conversion device and the negative electrode DC conversion device changes with the output power of the pseudo-bipolar DC conversion device.
  • the specific process is as follows: control the outgoing switch connected to the pseudo-bipolar DC conversion equipment to work, start the pseudo-bipolar DC conversion equipment in constant power mode, and set the pseudo-bipolar DC conversion equipment. Power rating of pole-to-DC converter equipment.
  • the constant power mode startup of the negative DC conversion device and the positive DC conversion device is similar.
  • the above method controls any two devices in the positive DC conversion device, the negative DC conversion device and the pseudo-bipolar DC conversion device to start in a constant voltage mode, clamps the voltage between the corresponding bus bars, thereby setting the two-pole bus voltage, and controls the remaining one device to
  • the constant power mode starts, controls the output power, makes the DC system run normally, realizes the interconnection operation of the true and pseudo bipolar DC conversion equipment, and can realize the performance test of the pseudo bipolar equipment based on the true bipolar DC power distribution test system.
  • An interconnected operation control system for true and pseudo bipolar DC conversion equipment comprising,
  • Grounding control module control the grounding equipment of the DC system to connect with the zero-pole bus; among them, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
  • Constant voltage startup control module control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars The voltage meets the preset requirements;
  • Constant power startup control module control the remaining one device to start in constant power mode, so that the output power of the constant voltage startup device changes with the output power of the constant power startup device.
  • a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform the operation of a true and pseudo bipolar DC conversion device. Interconnected operation control method.
  • a computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more A plurality of processors are executed, and the one or more programs include instructions for executing the interconnection operation control method of the true and pseudo bipolar DC conversion devices.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

Abstract

Disclosed are a method and system for interconnected operation control of a true and pseudo bipolar direct current conversion device. In the present invention, any two of a positive direct current conversion device, a negative direct current conversion device, a pseudo bipolar direct current conversion device are controlled to be started in a constant voltage mode, and corresponding inter-bus voltages are clamped so as to make the voltages of two-pole buses constant; and the remaining device is controlled to be started in a constant power mode, and output power is controlled, such that a direct current system operates normally. In this way, the interconnected operation of the true and pseudo bipolar direct current conversion device is achieved.

Description

一种真、伪双极直流变换设备的互联运行控制方法及系统A method and system for interconnected operation control of true and pseudo bipolar DC conversion equipment 技术领域technical field
本发明涉及一种真、伪双极直流变换设备的互联运行控制方法及系统，属于电力领域。The invention relates to an interconnected operation control method and system of true and pseudo bipolar direct current conversion equipment, belonging to the field of electric power.
背景技术Background technique
构建高效、低耗、可靠的直流配用电系统是实现直流型源荷高效匹配的重要途径。开展中低压直流配用电系统关键技术研究与示范，实现直流配用电系统安全可靠高效运行，对转变传统供用电模式，提高新能源利用率，实现我国社会可持续发展具有重要里程碑意义。Building a high-efficiency, low-consumption, and reliable DC power distribution system is an important way to achieve high-efficiency DC source-to-load matching. Carrying out research and demonstration of key technologies in the medium and low voltage DC power distribution system to realize the safe, reliable and efficient operation of the DC power distribution system is an important milestone in transforming the traditional power supply mode, improving the utilization rate of new energy, and realizing the sustainable development of my country's society.
专利CN110460034A公开了一种直流配用电系统及其测试方法，能够实现对直流系统真伪双极特性的对比及直流配网关键装备的性能分析，但是无法实现真、伪双极直流变换设备的互联运行。Patent CN110460034A discloses a DC power distribution system and its test method, which can realize the comparison of the true and false bipolar characteristics of the DC system and the performance analysis of the key equipment of the DC distribution network, but cannot realize the true and false bipolar DC conversion equipment. interconnected operation.
发明内容SUMMARY OF THE INVENTION
本发明提供了一种真、伪双极直流变换设备的互联运行控制方法及系统，解决了背景技术中披露的问题。The present invention provides an interconnected operation control method and system for true and pseudo bipolar DC conversion equipment, and solves the problems disclosed in the background art.
为了解决上述技术问题，本发明所采用的技术方案是：In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:
一种真、伪双极直流变换设备的互联运行控制方法，包括，An interconnected operation control method for true and pseudo bipolar DC conversion equipment, comprising,
控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统；The grounding equipment that controls the DC system is connected to the zero-pole bus; wherein, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求；Control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars meet the preset requirements. ;
控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Control the remaining one device to start in constant power mode, so that the output power of the device started in constant voltage mode changes with the output power of the device started in constant power mode.
控制直流系统的正极直流变换设备、负极直流变换设备以定电压方式启动，分别钳位正极直流母线与零极母线间的电压、负极直流母线与零极母线间的电压，并使母线间的电压满足预设要求。Control the positive DC conversion equipment and negative DC conversion equipment of the DC system to start in a constant voltage mode, respectively clamp the voltage between the positive DC bus and the zero-pole bus, and the voltage between the negative DC bus and the zero-pole bus, and make the voltage between the buses. meet preset requirements.
控制伪双极直流变换设备以定功率方式启动，使正极直流变换设备和负极直流变换设备的输出功率随伪双极直流变换设备的输出功率变化。The pseudo-bipolar DC conversion device is controlled to be started in a constant power mode, so that the output power of the positive electrode DC conversion device and the negative electrode DC conversion device varies with the output power of the pseudo-bipolar DC conversion device.
控制直流系统的正极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位正极直流母线与零极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。The positive DC conversion equipment and pseudo-bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, respectively clamping the voltage between the positive DC bus and the zero-pole bus, and the voltage between the positive DC bus and the negative DC bus, and make the voltage between the busbars. The voltage meets the preset requirements.
控制负极直流变换设备以定功率方式启动，使正极直流变换设备和伪双极直流变换设备的输出功率随负极直流变换设备的输出功率变化。Control the negative DC conversion device to start in a constant power mode, so that the output power of the positive DC conversion device and the pseudo-bipolar DC conversion device changes with the output power of the negative DC conversion device.
控制直流系统的负极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位零极直流母线与负极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。The negative DC conversion equipment and pseudo-bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, respectively clamping the voltage between the zero-pole DC bus and the negative bus, the voltage between the positive DC bus and the negative DC bus, and making the voltage between the bus bars The voltage meets the preset requirements.
控制正极直流变换设备以定功率方式启动，使负极直流变换设备和伪双极直流变换设备的输出功率随正极直流变换设备的输出功率变化。The positive DC conversion device is controlled to start in a constant power mode, so that the output power of the negative DC conversion device and the pseudo-bipolar DC conversion device varies with the output power of the positive DC conversion device.
预设要求为，The default requirement is,
U A0＝0.5U AB＝U 0B U A0 =0.5U AB =U 0B
其中，U A0为正极直流母线与零极母线间的电压，U 0B为零极直流母线与负极母线间的电压，U AB为正极直流母线与负极直流母线间的电压。 Among them, U A0 is the voltage between the positive DC bus and the zero-pole bus, U 0B is the voltage between the zero-pole DC bus and the negative bus, and U AB is the voltage between the positive DC bus and the negative DC bus.
一种真、伪双极直流变换设备的互联运行控制系统，包括，An interconnected operation control system for true and pseudo bipolar DC conversion equipment, comprising,
接地控制模块：控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统；Grounding control module: control the grounding equipment of the DC system to connect with the zero-pole bus; among them, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
定电压启动控制模块：控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求；Constant voltage startup control module: control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars The voltage meets the preset requirements;
定功率启动控制模块：控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Constant power startup control module: control the remaining one device to start in constant power mode, so that the output power of the constant voltage startup device changes with the output power of the constant power startup device.
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行真、伪双极直流变换设备的互联运行控制方法。A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform the operation of a true and pseudo bipolar DC conversion device. Interconnected operation control method.
本发明所达到的有益效果：本发明控制正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，从而定两极母线电压，控制剩余一设备以定功率方式启动，控制输出功率，使直流系统正常运行，实现了真、伪双极直流变换设备的互联运行。The beneficial effects achieved by the present invention: the present invention controls any two devices in the positive DC conversion device, the negative DC conversion device and the pseudo-bipolar DC conversion device to start in a constant voltage mode, and clamps the corresponding voltage between the bus bars, so as to set the two poles. The busbar voltage controls the remaining one equipment to start in a constant power mode, controls the output power, makes the DC system run normally, and realizes the interconnected operation of the true and pseudo bipolar DC conversion equipment.
附图说明Description of drawings
图1为本发明方法的流程图；Fig. 1 is the flow chart of the method of the present invention;
图2为直流系统为真、伪双极直流变换设备互联直流系统的示意图。FIG. 2 is a schematic diagram of the DC system interconnecting the DC system with true and pseudo bipolar DC conversion equipment.
具体实施方式Detailed ways
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.
如图1所示，一种真、伪双极直流变换设备的互联运行控制方法，包 括以下步骤：As shown in Figure 1, a method for controlling the interconnected operation of true and pseudo bipolar DC conversion equipment includes the following steps:
步骤1，控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统。Step 1, control the grounding equipment of the DC system to connect with the zero-pole bus; wherein, the DC system is a DC system in which true and pseudo bipolar DC conversion devices are interconnected.
直流系统如图2所示，包括正极直流母线、零极母线、负极直流母线、真双极直流变换设备、伪双极直流变换设备、接地设备、各设备出线开关，其中，真双极直流变换设备包括负极直流变换设备和正极直流变换设备。The DC system is shown in Figure 2, including positive DC bus, zero-pole bus, negative DC bus, true bipolar DC conversion equipment, pseudo-bipolar DC conversion equipment, grounding equipment, and outlet switches of each device. Among them, true bipolar DC conversion The equipment includes a negative DC conversion device and a positive DC conversion device.
负极直流变换设备通过出线开关跨接零极母线和负极直流母线，正极直流变换设备通过出线开关跨接正极直流母线和零极母线；伪双极直流变换设备通过出线开关跨接正极直流母线和负极直流母线；接地设备通过出线开关接在零极母线上。其中，正极直流母线与零极母线间的电压为U A0，零极母线与负极直流母线间的电压为U 0B，正极直流母线与负极直流母线间的电压为U AB；负极直流变换设备流向零极母线的电流为I 10，从负极直流母线流入的电流为I 1B；正极直流变换设备流向正极直流母线的电流为I 2A，从零极母线流入的电流为I 20；伪双极直流变换设备从正极直流母线流入的电流为I 3A，流向负极直流母线的电流为I 3B。 The negative DC conversion device is connected across the zero pole bus and the negative DC bus through the outlet switch, the positive DC conversion device is connected across the positive DC bus and the zero pole bus through the outlet switch; the pseudo bipolar DC conversion device is connected across the positive DC bus and the negative electrode through the outlet switch DC bus; grounding equipment is connected to the zero-pole bus through the outgoing switch. Among them, the voltage between the positive DC bus and the zero-pole DC bus is U A0 , the voltage between the zero-pole DC bus and the negative DC bus is U 0B , and the voltage between the positive DC bus and the negative DC bus is U AB ; the negative DC conversion equipment flows to zero The current of the pole bus is I 10 , the current flowing from the negative DC bus is I 1B ; the current flowing from the positive DC conversion device to the positive DC bus is I 2A , and the current flowing from the zero-pole bus is I 20 ; the pseudo-bipolar DC conversion device The current flowing from the positive DC bus is I 3A , and the current flowing to the negative DC bus is I 3B .
控制直流系统的接地设备与零极母线接通，即控制接地设备与零极母线间的出线开关工作，使接地设备与零极母线接通，从而使零极母线接地。The grounding equipment of the control DC system is connected to the zero-pole bus, that is, the outlet switch between the grounding equipment and the zero-pole bus is controlled to work, so that the grounding device is connected to the zero-pole bus, so that the zero-pole bus is grounded.
步骤2，控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求。Step 2: Control any two devices in the positive DC conversion device, the negative DC conversion device, and the pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars meet. Default requirements.
由于是设备中任意两个定电压方式启动，因此可以有以下三种情况：Since any two constant voltage modes in the device are started, there are three situations as follows:
第一种：控制直流系统的正极直流变换设备、负极直流变换设备以定 电压方式启动，分别钳位正极直流母线与零极母线间的电压、负极直流母线与零极母线间的电压，并使母线间的电压满足预设要求。The first type: control the positive DC conversion equipment and negative DC conversion equipment of the DC system to start with constant voltage, respectively clamp the voltage between the positive DC bus and the zero-pole bus, and the voltage between the negative DC bus and the zero-pole bus, and make The voltage between the busbars meets the preset requirements.
第二种：控制直流系统的正极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位正极直流母线与零极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。The second: control the positive DC conversion equipment and pseudo-bipolar DC conversion equipment of the DC system to start in a constant voltage mode, respectively clamping the voltage between the positive DC bus and the zero-pole bus, and the voltage between the positive DC bus and the negative DC bus. And make the voltage between the busbars meet the preset requirements.
第三种：控制直流系统的负极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位零极直流母线与负极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。The third type: control the negative DC conversion equipment and pseudo-bipolar DC conversion equipment of the DC system to start in a constant voltage mode, respectively clamping the voltage between the zero-pole DC bus and the negative bus, and the voltage between the positive DC bus and the negative DC bus. And make the voltage between the busbars meet the preset requirements.
以正极直流变换设备定电压方式启动为例，具体过程如下：控制正极直流变换设备以定电压方式启动，控制正极直流变换设备出口电压，控制正极直流变换设备所连的出线开关工作，使正极直流母线与零极母线间的电压被箝位。负极直流变换设备和伪双极直流变换设备的定电压方式启动类似。Taking the startup of the positive DC conversion device in constant voltage mode as an example, the specific process is as follows: control the positive DC conversion device to start in a constant voltage mode, control the outlet voltage of the positive DC conversion device, and control the outlet switch connected to the positive DC conversion device to work, so that the positive DC conversion device works The voltage between the busbar and the zero-pole busbar is clamped. The constant voltage mode startup of the negative DC conversion device and the pseudo-bipolar DC conversion device is similar.
预设要求为：The default requirements are:
U A0＝0.5U AB＝U 0B U A0 =0.5U AB =U 0B
其中，U A0为正极直流母线与零极母线间的电压，U 0B为零极直流母线与负极母线间的电压，U AB为正极直流母线与负极直流母线间的电压。 Among them, U A0 is the voltage between the positive DC bus and the zero-pole bus, U 0B is the voltage between the zero-pole DC bus and the negative bus, and U AB is the voltage between the positive DC bus and the negative DC bus.
步骤3，控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Step 3, control the remaining one device to start in a constant power mode, so that the output power of the constant voltage mode startup device changes with the output power of the constant power mode startup device.
若定电压方式启动为第一种情况，则控制伪双极直流变换设备以定功率方式启动，使正极直流变换设备和负极直流变换设备的输出功率随伪双极直流变换设备的输出功率变化，各设备输出功率件的关系满足 P 1＝P 2＝0.5P 3；其中，P 1、P 2、P 3分别为负极直流变换设备的输出功率、正极直流变换设备的输出功率与伪双极直流变换设备的输入功率 If the constant voltage mode is the first case, the pseudo-bipolar DC conversion device is controlled to start in a constant power mode, so that the output power of the positive DC conversion device and the negative electrode DC conversion device changes with the output power of the pseudo-bipolar DC conversion device. The relationship between the output power components of each device satisfies P 1 =P 2 =0.5P 3 ; wherein, P 1 , P 2 , and P 3 are the output power of the negative DC conversion device, the output power of the positive DC conversion device, and the pseudo-bipolar DC, respectively. Transforming the input power of the device
若定电压方式启动为第二种情况，控制负极直流变换设备以定功率方式启动，使正极直流变换设备和伪双极直流变换设备的输出功率随负极直流变换设备的输出功率变化，各设备输出功率件的关系满足P 1＝P 2＝0.5P 3。 If the constant voltage mode startup is the second case, control the negative DC conversion device to start in constant power mode, so that the output power of the positive DC conversion device and the pseudo-bipolar DC conversion device changes with the output power of the negative DC conversion device, and each device outputs The relationship of the power element satisfies P 1 =P 2 =0.5P 3 .
若定电压方式启动为第三种情况，控制正极直流变换设备以定功率方式启动，使负极直流变换设备和伪双极直流变换设备的输出功率随正极直流变换设备的输出功率变化，各设备输出功率件的关系满足P 1＝P 2＝0.5P 3。 If the constant voltage mode startup is the third case, control the positive DC conversion device to start in constant power mode, so that the output power of the negative DC conversion device and the pseudo-bipolar DC conversion device changes with the output power of the positive DC conversion device, and each device outputs The relationship of the power element satisfies P 1 =P 2 =0.5P 3 .
以伪双极直流变换设备定功率方式启动为例，具体过程如下：控制伪双极直流变换设备所连的出线开关工作，以定功率方式启机伪双极直流变换设备，并设定伪双极直流变换设备的功率定值。负极直流变换设备和正极直流变换设备的定功率方式启动类似。Take the pseudo-bipolar DC conversion equipment starting in constant power mode as an example, the specific process is as follows: control the outgoing switch connected to the pseudo-bipolar DC conversion equipment to work, start the pseudo-bipolar DC conversion equipment in constant power mode, and set the pseudo-bipolar DC conversion equipment. Power rating of pole-to-DC converter equipment. The constant power mode startup of the negative DC conversion device and the positive DC conversion device is similar.
具体推导如下：The specific derivation is as follows:
根据基尔霍夫电流定律可得，According to Kirchhoff's current law,
I 3A＝I 2A I 3A = I 2A
由于I 3A＝I 3B，再结合基尔霍夫电流定律可得， Since I 3A =I 3B , combined with Kirchhoff's current law, we can get,
I 1B＝I 3B I 1B =I 3B
已知A known
P 3＝U AB·I 3A P 3 =U AB ·I 3A
根据according to
I 10＝I 1B＝I 3B I 10 =I 1B =I 3B
U A0＝0.5U AB＝U 0B U A0 =0.5U AB =U 0B
可得Available
P 1＝U 0B·I 10＝0.5U AB·I 3A P 1 =U 0B ·I 10 =0.5U AB ·I 3A
同理可得The same can be obtained
P 2＝U A0·I 2A＝0.5U AB·I 3A P 2 =U A0 ·I 2A =0.5U AB ·I 3A
所以so
P 1＝P 2＝0.5P 3。 P 1 =P 2 =0.5P 3 .
上述方法控制正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，从而定两极母线电压，控制剩余一设备以定功率方式启动，控制输出功率，使直流系统正常运行，实现了真、伪双极直流变换设备的互联运行，可基于真双极直流配用电试验系统实现伪双极设备的性能测试。The above method controls any two devices in the positive DC conversion device, the negative DC conversion device and the pseudo-bipolar DC conversion device to start in a constant voltage mode, clamps the voltage between the corresponding bus bars, thereby setting the two-pole bus voltage, and controls the remaining one device to The constant power mode starts, controls the output power, makes the DC system run normally, realizes the interconnection operation of the true and pseudo bipolar DC conversion equipment, and can realize the performance test of the pseudo bipolar equipment based on the true bipolar DC power distribution test system.
一种真、伪双极直流变换设备的互联运行控制系统，包括，An interconnected operation control system for true and pseudo bipolar DC conversion equipment, comprising,
接地控制模块：控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统；Grounding control module: control the grounding equipment of the DC system to connect with the zero-pole bus; among them, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
定电压启动控制模块：控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求；Constant voltage startup control module: control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars The voltage meets the preset requirements;
定功率启动控制模块：控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Constant power startup control module: control the remaining one device to start in constant power mode, so that the output power of the constant voltage startup device changes with the output power of the constant power startup device.
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行真、伪双极直流变换设备的互联运行控制方法。A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform the operation of a true and pseudo bipolar DC conversion device. Interconnected operation control method.
一种计算设备，包括一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行真、伪双极直流变换设备的互联运行控制方法的指令。A computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more A plurality of processors are executed, and the one or more programs include instructions for executing the interconnection operation control method of the true and pseudo bipolar DC conversion devices.
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.
以上仅为本发明的实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均包含在申请待批的本发明的权利要求范围之内。The above are only examples of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the application for pending approval of the present invention. within the scope of the claims.

Claims (10)

  1. 一种真、伪双极直流变换设备的互联运行控制方法，其特征在于：包括，A method for interconnected operation control of true and pseudo bipolar direct current conversion equipment is characterized in that: comprising:
    控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统；The grounding equipment that controls the DC system is connected to the zero-pole bus; wherein, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
    控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求；Control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars meet the preset requirements. ;
    控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Control the remaining one device to start in constant power mode, so that the output power of the device started in constant voltage mode changes with the output power of the device started in constant power mode.
  2. 根据权利要求1所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制直流系统的正极直流变换设备、负极直流变换设备以定电压方式启动，分别钳位正极直流母线与零极母线间的电压、负极直流母线与零极母线间的电压，并使母线间的电压满足预设要求。A method for interconnecting true and pseudo bipolar DC conversion equipment according to claim 1, characterized in that: the positive DC conversion equipment and the negative DC conversion equipment of the control DC system are started in a constant voltage mode, respectively clamping the positive DC The voltage between the busbar and the zero-pole busbar, the voltage between the negative DC busbar and the zero-pole busbar, and the voltage between the busbars meet the preset requirements.
  3. 根据权利要求2所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制伪双极直流变换设备以定功率方式启动，使正极直流变换设备和负极直流变换设备的输出功率随伪双极直流变换设备的输出功率变化。A method for interconnecting true and pseudo bipolar DC conversion equipment according to claim 2, characterized in that: the pseudo bipolar DC conversion equipment is controlled to start in a constant power mode, so that the positive electrode DC conversion equipment and the negative electrode DC conversion equipment are connected to each other. The output power varies with the output power of the pseudo-bipolar DC conversion device.
  4. 根据权利要求1所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制直流系统的正极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位正极直流母线与零极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。A method for interconnecting operation of true and pseudo bipolar DC conversion equipment according to claim 1, characterized in that: the positive DC conversion equipment and the pseudo bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, and clamped respectively. The voltage between the positive DC bus and the zero-pole bus, the voltage between the positive DC bus and the negative DC bus, and the voltage between the buses meets the preset requirements.
  5. 根据权利要求4所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制负极直流变换设备以定功率方式启动，使正极直流变换设备和伪双极直流变换设备的输出功率随负极直流变换设备的输出功率变化。A method for interconnecting true and pseudo bipolar DC conversion equipment according to claim 4, characterized in that: controlling the negative electrode DC conversion equipment to start in a constant power mode, so that the positive electrode DC conversion equipment and the pseudo bipolar DC conversion equipment are connected to each other. The output power varies with the output power of the negative DC conversion device.
  6. 根据权利要求1所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制直流系统的负极直流变换设备、伪双极直流变换设备以定电压方式启动，分别钳位零极直流母线与负极母线间的电压、正极直流母线与负极直流母线间的电压，并使母线间的电压满足预设要求。A method for interconnecting true and pseudo bipolar DC conversion equipment according to claim 1, characterized in that: the negative electrode DC conversion equipment and the pseudo bipolar DC conversion equipment of the control DC system are started in a constant voltage mode, and clamped respectively. The voltage between the zero-pole DC bus and the negative bus, the voltage between the positive DC bus and the negative DC bus, and the voltage between the buses meets the preset requirements.
  7. 根据权利要求6所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：控制正极直流变换设备以定功率方式启动，使负极直流变换设备和伪双极直流变换设备的输出功率随正极直流变换设备的输出功率变化。A method for interconnecting true and pseudo bipolar DC conversion equipment according to claim 6, characterized in that: the positive electrode DC conversion equipment is controlled to start in a constant power mode, so that the negative electrode DC conversion equipment and the pseudo bipolar DC conversion equipment are connected to each other. The output power varies with the output power of the positive DC conversion device.
  8. 根据权利要求1～7任意一项所述的一种真、伪双极直流变换设备的互联运行方法，其特征在于：预设要求为，The interconnected operation method for true and pseudo bipolar DC conversion equipment according to any one of claims 1 to 7, wherein the preset requirements are:
    U A0＝0.5U AB＝U 0B U A0 =0.5U AB =U 0B
    其中，U A0为正极直流母线与零极母线间的电压，U 0B为零极直流母线与负极母线间的电压，U AB为正极直流母线与负极直流母线间的电压。 Among them, U A0 is the voltage between the positive DC bus and the zero-pole bus, U 0B is the voltage between the zero-pole DC bus and the negative bus, and U AB is the voltage between the positive DC bus and the negative DC bus.
  9. 一种真、伪双极直流变换设备的互联运行控制系统，其特征在于：包括，An interconnected operation control system for true and pseudo bipolar DC conversion equipment, characterized in that it includes:
    接地控制模块：控制直流系统的接地设备与零极母线接通；其中，直流系统为真、伪双极直流变换设备互联的直流系统；Grounding control module: control the grounding equipment of the DC system to connect with the zero-pole bus; among them, the DC system is a DC system interconnected by true and pseudo bipolar DC conversion equipment;
    定电压启动控制模块：控制直流系统的正极直流变换设备、负极直流变换设备以及伪双极直流变换设备中的任意两个设备以定电压方式启动，钳位相应的母线间电压，并使母线间的电压满足预设要求；Constant voltage startup control module: control any two devices in the positive DC conversion device, negative DC conversion device and pseudo-bipolar DC conversion device of the DC system to start in a constant voltage mode, clamp the corresponding voltage between the bus bars, and make the voltage between the bus bars The voltage meets the preset requirements;
    定功率启动控制模块：控制剩余一设备以定功率方式启动，使定电压方式启动设备的输出功率随定功率方式启动设备的输出功率变化。Constant power startup control module: control the remaining one device to start in constant power mode, so that the output power of the constant voltage startup device changes with the output power of the constant power startup device.
  10. 一种存储一个或多个程序的计算机可读存储介质，其特征在于：所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行根据权利要求1至8所述的方法中的任一方法。A computer-readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform the execution according to claim 1 to Any of the methods described in 8.
PCT/CN2021/102567 2021-02-26 2021-06-26 Method and system for interconnected operation control of true and pseudo bipolar direct current conversion device WO2022179015A1 (en)

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